I won't be able to do a ton of these cause this did take a fair amount of time. Overall he seems to say that atheism is not coherent due to its lack in meaning and in moral law. These were two major themes, he had a couple others, but these he drove home with examples, poetry, stories, and personal opinion. I don't feel like it's proper to say atheism should assign meaning to someones life. Meaning is something that everyone develops for themselves. If someone decides to just open a coffee shop and serve their small community for the rest of their lives, who's to say that this is not a good meaning? it would be on an individual basis. I could go into this much deeper, but I'll get to morality to try and keep this readable.
As for morality, I use a sense of consequential morality, knowing that my actions have affects on others, my main goal being to do the most good. We could get into what is "good", but for the most part, helping someone up who has tripped will generally be seen as altruistic and tripping someone for no reason is generally seen as harmful. For these two situations empathy alone can be a good driving force in decision making. Even with the bible we find people coming up with ethics for themselves. This is why you see people using bible verses to back up whatever point they are trying to make, even if the intentions are generally recognized as bad (even by their fellow Christians). Atheism lacks the supernatural authority, but even without a god, I don't want to cause harm. Is having a god the only thing holding you back from murder? If it was truly discovered there was no god tomorrow, would you start stealing and hurting people? There are people (atheists) who live that way everyday and choose not to do harm, they don't need to be threatened with hell fire.
I agree with his point that atheism itself does not come with a set of rules, it's not supposed to, your just rejecting that god exists. You as a person have to discover what your meaning is and what type of person you want to be. No god is going to stop you from murdering someone if you want to and not having a god doesn't make you want to. it's just not that simple...